CN218160013U

CN218160013U - Capacitor with detection device

Info

Publication number: CN218160013U
Application number: CN202221549761.9U
Authority: CN
Inventors: 韦军; 朱杰
Original assignee: Ningbo Bicai Industrial Co ltd
Current assignee: Ningbo Bicai Industrial Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-12-27
Anticipated expiration: 2032-06-20

Abstract

The utility model belongs to the technical field of the condenser, a condenser with detection device is provided, include: the capacitor box comprises a box body, a plurality of capacitor cores and a plurality of capacitor cores, wherein a containing cavity is formed in the box body; the pressure detection device is arranged on the box body and provided with a hose, the hose extends into the containing cavity until the hose is contacted with the bottom of the containing cavity, and the hose is abutted against the capacitor core; and the insulating glue is filled in the accommodating cavity in a sealing mode and covers the capacitor core and the hose. Compared with the prior art, the utility model has the advantages of be provided with pressure measurement on this box, the core that holds the intracavity is when reaching working life limit or short circuit, thereby the product can not break off from the circuit and make produced extraordinary heat extrude the hose to making the core inflation, and gas in the hose is extruded to pressure switch department, and pressure switch gives the signal to the condition of detecting the inside core of condenser has increased the reliability promptly, has reduced the potential safety hazard.

Description

Capacitor with detection device

Technical Field

The utility model belongs to the technical field of the condenser, concretely relates to condenser with detection device.

Background

A direct current support capacitor, also called DC-Link capacitor, belongs to one of passive devices, mainly adopts a polypropylene film medium direct current support capacitor, and is widely applied to the power electronic industry. When a core in a conventional direct-current support capacitor reaches the working life limit or short circuit, the insulation degree is reduced, a product cannot be disconnected from a circuit, abnormal heat is generated until the core expands, so that a capacitor cover deforms and expands, finally blasting, liquid leakage and fire are caused, the reliability is reduced, and serious potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem to the current situation of prior art, and provide a condenser with detection device.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: it is proposed a capacitor with a detection device comprising: the capacitor box comprises a box body, a plurality of capacitor cores and a plurality of capacitor cores, wherein a containing cavity is formed in the box body;

the pressure detection device is arranged on the box body and provided with a hose, the hose extends into the containing cavity until the hose is contacted with the bottom of the containing cavity, and the hose is abutted against the capacitor core;

and the insulating glue is filled in the accommodating cavity in a sealing manner and covers the capacitor core and the hose.

In the capacitor with the detection device, the pressure detection device has a pressure switch, and the pressure switch is arranged on the box body and connected with the hose.

In the capacitor with the detection device, the flexible pipe is positioned on the side wall of the cavity.

In the capacitor with the detection device, the insulating glue is made of polyurethane.

In the capacitor with the detection device, a positive electrode plate and a negative electrode plate are arranged in the accommodating cavity, two ends of the capacitor core are respectively connected with a positive lead-out piece and a negative lead-out piece, the positive lead-out piece is connected with the positive electrode plate, and the negative lead-out piece is connected with the negative electrode plate.

In the capacitor with the detection device, a positioning tool is arranged on the box body, a positive terminal and a negative terminal are mounted on the positioning tool, the positive terminal is connected with the positive electrode plate, and the negative terminal is connected with the negative electrode plate.

In the capacitor with the detection device, the box body is provided with a pressure release part which is positioned at two sides of the positioning tool.

Compared with the prior art, the utility model has the advantages of be provided with pressure measurement on this box, the core that holds the intracavity is when reaching working life limit or short circuit, thereby the product can not break off from the circuit and make produced extraordinary heat extrude the hose to making the core inflation, and gas in the hose is extruded to pressure switch department, and pressure switch gives the signal to the condition of detecting the inside core of condenser has increased the reliability promptly, has reduced the potential safety hazard.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a sectional view of the structure of the present invention;

fig. 3 is a schematic diagram of the internal structure of the present invention.

In the figure, 1, a box body; 2. a housing chamber; 3. a capacitor core; 4. a pressure detection device; 5. a hose; 6. a pressure switch; 7. a positive electrode plate; 8. a negative electrode plate; 9. positive lead-out sheet; 10. a negative lead-out sheet; 11. positioning a tool; 12. a positive electrode terminal; 13. a negative terminal; 14. a pressure release nut.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 3, the capacitor with the detection device comprises a box body 1, a plurality of capacitor cores 3, a plurality of detection units and a plurality of detection units, wherein a cavity 2 is formed in the box body 1, and the capacitor cores 3 are arranged in the cavity 2 in a staggered manner; the pressure detection device 4 is arranged on the box body 1, the pressure detection device 4 is provided with a hose 5, the hose 5 extends into the accommodating cavity 2 until the hose is contacted with the bottom of the accommodating cavity 2, and the hose 5 is abutted to the capacitor core 3; and the insulating glue is filled in the accommodating cavity 2 in a sealing mode and covers the capacitor core 3 and the hose 5.

Pressure measurement device 4 sets up on box 1, hose 5 stretches into to holding the intracavity 2 until contacting with the bottom that holds the chamber 2 from box 1 top, the crisscross orderly setting of a plurality of electric capacity cores 3 is put in holding the chamber 2, pour insulating cement into to holding the chamber 2 until will hold the electric capacity core 3 of topmost and the hose 5 of this horizontal end and cover in chamber 2, insulating cement automatic curing follows, when electric capacity core 3 in holding the chamber 2 reaches the working life limit or when short circuit, the product can not break off from the circuit and then produced extraordinary heat to make electric capacity core 3 expand thereby extrude hose 5, the gas in hose 5 is extrudeed to pressure switch 6 department, pressure switch 6 gives the signal, thereby detect the condition of the inside core of condenser.

The pressure detection device 4 has a pressure switch 6, and the pressure switch 6 is provided on the case 1 and connected to the hose 5.

Pressure switch 6 installs in the upper end of box 1 to pressure switch 6's drive end is connected with external signal source, there is the pipeline hose 5 inside, hose 5's lower extreme is airtight, hose 5's upper end is connected with pressure switch 6, thereby the core inflation is with the extrusion of hose 5, thereby the gas in the hose 5 is extruded to 6 departments of pressure switch, pressure switch 6's drive end gives external signal source signal, thereby realize the detection effect.

The hose 5 is located on a side wall of the chamber 2.

Hose 5 sets up in the lateral wall department that holds chamber 2, can realize the detection effect more accurately.

The insulating glue is made of polyurethane.

Polyurethane has this fine stability, chemical resistance, resilience and mechanical properties, can effectively solidify by waterborne polyurethane, realizes wrapping up electric capacity core 3, thereby electric capacity core 3 inflation passes through polyurethane and extrudes hose 5, realizes detecting.

A positive electrode plate 7 and a negative electrode plate 8 are arranged in the cavity 2, two ends of the capacitor core 3 are respectively connected with a positive lead-out piece 9 and a negative lead-out piece 10, the positive lead-out piece 9 is connected with the positive electrode plate 7, and the negative lead-out piece 10 is connected with the negative electrode plate 8.

The positive electrode plate 7 and the negative electrode plate 8 are both positioned at the top of the cavity 2, the positive lead-out sheet 9 is connected with one end of all the capacitor cores 3, the negative lead-out sheet 10 is connected with the other end of all the capacitor cores 3, the capacitor cores 3 are made of polypropylene films as media and aluminum foils as electrodes, and an external power supply stores energy on the capacitor cores 3 through the positive electrode plate 7 and the negative electrode plate 8.

A positioning tool 11 is arranged on the box body 1, a positive terminal 12 and a negative terminal 13 are mounted on the positioning tool 11, the positive terminal 12 is connected with the positive electrode plate 7, and the negative terminal 13 is connected with the negative electrode plate 8.

The capacitor stores energy by being connected to an external device through the positive terminal 12 and the negative terminal 13.

The box body 1 is provided with a pressure release part which is positioned at two sides of the positioning tool 11.

The pressure release member is a pressure release valve which is detachably arranged on the box body 1 according to preset requirements, and when the pressure in the accommodating cavity 2 rises to reach opening pressure, the pressure release valve acts to reduce the pressure in the accommodating cavity 2 to a normal value, so that the capacitor is protected.

It should be noted that all the directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, the descriptions of the embodiments as "first," "second," "a," etc. in this disclosure are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of the indicated features is indicative. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions of the embodiments of the present invention can be combined with each other, but it is necessary to use a person skilled in the art to realize the basis, and when the technical solutions are combined and contradictory to each other or cannot be realized, the combination of the technical solutions should not exist, and is not within the protection scope of the present invention.

Claims

1. A capacitor with a detection device, comprising:

the capacitor box comprises a box body, a plurality of capacitor cores and a plurality of capacitors, wherein a containing cavity is formed in the box body;

and the insulating glue is filled in the accommodating cavity in a sealing mode and covers the capacitor core and the hose.

2. The capacitor with detecting device as claimed in claim 1, wherein the pressure detecting device has a pressure switch disposed on the case and connected to the hose.

3. A capacitor with a detecting device according to claim 2, wherein the flexible tube is located on the side wall of the cavity.

4. The capacitor with detecting device as claimed in claim 1, wherein the insulating glue is a polyurethane material.

5. The capacitor with detecting device of claim 1, wherein a positive electrode plate and a negative electrode plate are disposed in the cavity, a positive tab and a negative tab are connected to two ends of the capacitor core, respectively, the positive tab is connected to the positive electrode plate, and the negative tab is connected to the negative electrode plate.

6. The capacitor with detection device as claimed in claim 5, wherein the case is provided with a positioning tool, and the positioning tool is provided with a positive terminal and a negative terminal, the positive terminal is connected with the positive electrode plate, and the negative terminal is connected with the negative electrode plate.

7. The capacitor with the detection device as claimed in claim 6, wherein a pressure release member is disposed on the box body and located at two sides of the positioning tool.